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OS Speed R21 Shimo Edition 3 with TR03 EFRA2196 & MR05 exhaust pipe combo set coming soon
Preorder now!
Model no: 1FG01
Introducing the "O.S.SPEED R21 SHIMO EDITION3," developed through repeated testing with O.S.SPEED support driver Takaaki Shimo.
Additional modifications to the exhaust section of the crankcase and the use of spacers have resulted in a linear acceleration feeling from low to high speeds. The 9-port cylinder liner has been newly treated to reduce seizure, increasing reliability, and the carburetor now features a "dust covering" to prevent even the slightest fuel seepage and air intrusion. Idling performance has been improved through detailed revisions.
The exterior features a special "Deep Gold" color on the outer head, reducer, and other parts, creating a racing-inspired look.
In addition, to maximize the engine's power, we've included a TR03 EFRA2196+MR05 set.
Spec.---------------------------
Displacement： 3.49 cc / 0.213cu.in.
Bore: 16.08mm / 0.633 in.
Stroke: 17.20mm / 0.677 in.
Output :2.80 ps / 2.76 hp / 35,000 r.p.m.
practical rpm range: 4,000-45,000 r.p.m.
Engine Weight:347g / 12.24 oz.
Standard accessories---------------------------
Glow plug T-RP7
Reducer φ8.5(RED)
Exhaust seal ring
Dust cap set 12-30(φ3、φ16、φ18)
